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參數(shù)資料
| 型號(hào)： | TPA032D04DCAR |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual Audio Amplifier |
| 中文描述： | 雙音頻放大器 |
| 文件頁數(shù)： | 17/24頁 |
| 文件大?。?/td> | 350K |
| 代理商： | TPA032D04DCAR |
TPA032D04
10-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS203A – DECEMBER 1999 – REVISED MARCH 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
losses in a real-world class-D amplifier
Losses make class-D amplifiers nonideal, and reduce the efficiency below 100%. These losses are due to the
output transistors having a nonzero r
DS(on)
, and rise and fall times that are greater than zero.
The loss due to a nonzero r
DS(on)
is called conduction loss, and is the power lost in the output transistors at
nonswitching times, when the transistor is on (saturated). Any r
DS(on)
above 0
causes conduction loss.
Figure 9 shows an H-bridge output circuit simplified for conduction loss analysis and can be used to determine
new efficiencies with conduction losses included.
VDD = 12 V
RL
4
0.36
0.36
rDS(on)
rDS(off)
rDS(off)
rDS(on)
5 M
5 M
Figure 9. Output Transistor Simplification for Conduction Loss Calculation
The power supplied, P
SUP
, is determined to be the power output to the load plus the power lost in the transistors,
assuming that there are always two transistors on.
Efficiency
I
2
R
L
I
2
2r
DS(on)
I
2
R
L
Efficiency
P
L
P
SUP
Efficiency
R
L
2r
DS(on)
R
L
Efficiency
95%
at all output levels r
DS(on)
0.1
, R
L
4
Efficiency
85%
at all output levels r
DS(on)
0.36
, R
L
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA032D04DCARG4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| TPA032D04EVM | 制造商:Texas Instruments 功能描述:EVAL KIT FOR 10-W STEREO CLS-D AUD PWR AMP - Bulk |
| TPA-10 | 功能描述:保險(xiǎn)絲 TELPOWER ALARM FUSE RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| TPA100 | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 100V 50uA Bidirect RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| TPA100RL | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 100V 50uA Bidirect RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
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